I don't agree at all, I think it's important to integrate immigrants in a country's culture as well as possible, because not doing so will result in damaging conflict between the existing population and the immigrants who bring conflicting value systems with them. I think the lack of an endless supply of resources for integrating immigrants is a good reason to limit immigration.

I think borders can be very valuable to separate groups with conflicting ideologies and worldviews, but I wish you the best luck in advocating that policy in your local political sphere.